What is the typical pH range for phenolphthalein as an indicator?

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Question: What is the typical pH range for phenolphthalein as an indicator?

Options:

Correct Answer: 4-10

Solution:

Phenolphthalein changes color in the pH range of approximately 4 to 10, making it suitable for many acid-base titrations.

What is the typical pH range for phenolphthalein as an indicator?

What is the typical pH range for phenolphthalein as an indicator?

Step 1: Understand what phenolphthalein is. It is a chemical compound used as an indicator in acid-base reactions.
Step 2: Know that indicators change color depending on the pH level of a solution.
Step 3: Learn that phenolphthalein specifically changes color in a certain pH range.
Step 4: Identify that the typical pH range for phenolphthalein is from about 4 to 10.
Step 5: Recognize that this pH range means phenolphthalein can be used in many acid-base titrations.

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